Conduit stub-up clamp



1962 R. F. PIASECKI 3,061,254

CONDUIT STUB-UP CLAMP Filed Dec. 8, 1960 Raymond fi' )ageclz UnitedStates Patent M 3,061,254 CONDUIT STUB-UP CLAMP Raymond F. Piasecki,Hazlet, N.J., assignor to The Thomas & Betts Co., Elizabeth, N.J., acorporation of New Jersey Filed Dec. 8, 1960, Ser. No. 74,501 2 Claims;(Cl. 248-74) are provided for readily securing one or more of suchclamps to an apertured channel bar whereby a series of such clamps maybe located selectively in a predetermined position for subsequentlysecuring the free end portion of a like member of raceway conduitsthereto to maintain the same in a fixed predetermined position prior tothe pouring of a concrete floor over a major portion of the conduits asin a building operation for example.

Prior art devices utilizable for the same general purpose possessedcertain disadvantages in that they did not provide for the selectiveadjustment thereof nor for maintaining the same in a positivelyrfixed,predetermined position relative to wall terminal'boards, switch boxes,outlet boxes and the'like.

Accordingly, it is an object of the invention toprovide a conduitclamp'of the character described which-obviates the above noteddisadvantages. a

A further object of the invention is to provide a conduit positioningand supporting clamp which provides for the convenient and rapidplacement of a series of .stub-up conduit end portions in apredetermined position in selectively spaced alignment preparatory topouring a concrete floor over a major portion of such conduits.

Another object of the invention is to provide a con duit positioning andsupporting clamp whereby the selective spacing and alignment of a seriesof stub-up conduit end portions and the securing of the same in relativepredetermined position is facilitated in a rapid and efiicient manner.

A further object of the invention is to provide conduit positioning andsupporting clamps as specified, which are adapted to be adjustablysecured to an aperltured channel bar for selectively spacing andaligning each of a series of stub-up conduit end portions, of differingheight or length, and for securing the same in such positions ofadjustment in .a rapid and efiicient manner.

Various other objects, advantages and features of the invention willbecome apparent from the following detailed description when read inconnection with the accompanying drawing, in which:

FIGURE 1 is a view in elevation showing a slotted channel bar mountingone of two or more conduit positioning clamps as utilized fortemporarily securing a like number of conduit stub-up end portions inpredetermined spaced alignment preparatory to pouring a concrete floorover a major portion of conduits;

FIGURE 2 is a top plan view of the same partly in section;

FIGURE 3 is a similar view of the clamp per se, as secured to a slottedchannel bar, showing the manner in which its conduit retaining cap issnapped over the free end of its saddle portion;

FIGURE 4 is a side elevational view looking in the direction of thearrows in FIGURE 1;

Patented Oct. 30, 1962 FIGURE 5 is a transverse sectional view taken onthe line 5-5 of FIGURE 4, and

FIGURE 6 is a perspective view of the saddle member per se, of theclamp.

Referring to the drawing, the conduit stub-up clamp comprises a saddlemember 10 and a coactable spring clip or yoke 12, adapted to form anannular closure therebetween for receiving a suitable size conduittherethrough in clamped relation.

The saddle member 10, comprises a stamping of suitable sheet metalpresenting a flat base 14, having its opposite ends bent normal theretoto provide a pair of short projections or ears 16, thereon for a purposehereinafter described. The side margins of the saddle member 10, arealso bent normal thereto but in an opposite direction and plane toprovide flanges 18, thereon having hooked ends 20, with an arcuate edgeface 22, therebetween also for a purpose hereinafter described.

The spring clip or yoke 12, comprises a strip of suitable metal having alinear corrugation 24 throughout its length adjacent each'marginal edgethereoftoximpart rigidity thereto.

"A pair of rectangular slots 26 are p'rovidedlengthwise of the'clip oryoke 12, adjacent each of its opposite ends in spacedparallelism and ascrew-threaded aperture formed therein centrally of its free ends forthe reception of a suitable set-screw. 30.

.1 .As clearlyshown in FIGURES 2, 3 and 6, the clip or yoke 12, has aU-shape configuration whereby it is adapted to have its free endssnapped over the hooked ends 20, I 'E of the saddle member 10, to causethe said hooked ends 20, -to enter the slots 26, provided therefor inthe clip or yoke 12, whereby it is detachably secured to the saddlemember 10, to provide an annular passage for receiving an upstandingportion of a conduit C therethrough to be adjustably secured by means ofthe set-screw 30.

In the use of the herein described clamp, two or more saddle members 10,are secured to a suitable channel bar 32, having a plurality of equallyspaced rectangular slots 34, formed therein for receiving the ears 16,of the saddle members 10 therein, a suitable machine screw 36 extendingthrough an aperture 38, formed in the base 14, of each saddle member 10,and through the slotted channel bar 32 for the reception of anelongated, rec tangular nut 40, on the free, threaded end of each screw36, whereby the saddle members 10 are secured to the channel bar 32, andheld against relative movement by the ears 16, and the nut 40, againstrelative movement by the channel bar.

With the channel bar 32, thus provided, the stub-up or upstanding endportion of a like number of conduits C, are brought into seatingengagement with the arcuate edge faces 22, of the flanges 18 formed onthe saddle members 10*, and a clip or yoke 12 passed about each conduitC, and snapped into locked engagement with the hooked ends 20, of eachsaddle member 10. When so assembled, the set-screw 30, in each clip oryoke 12, is secured against its correlated conduit C, whereby thesnap-on engagement between the hooked ends 20 of each saddle member 10,and the slotted ends of the clips or yokes 12, is maintained innon-detachable position and all of the upstanding conduit end portionsC, clamped in predetermined alignment and so held during the pouring ofa concrete floor F, over the horizontally disposed major conduitportions indicated at X.

From the foregoing, it will be readily apparent that the hereindescribed conduit stub-up clamp provides for the quick and efficientalignment and temporary fixed adjustment of a series of upstandingconduit end portions preparatory to the pouring of a concrete floor in abuilding operation or the like.

While the invention has been illustrated and described with respect to apreferred embodiment thereof, it is to be expressly understood thatvarious changes and modifications may be made therein without departingfrom the inventive concept underlying the same. Therefore, the inventionis not to be limited except as is necessitated by the prior art and thescope of the appended claims.

What is claimed is:

l. A stub-up clamp including a screw-bolt and nut adapted to be securedto a slotted channel bar comprising a U-shaped saddle member having aclearance opening centrally through the base thereof for receiving saidscrew-bolt therethrough, an ear-like projection formed on each sidemargin of the base portion of said saddle member normal thereto adaptedto extend through a slot in said channel bar to prevent relativerotation thereof, the legs of said saddle member each having a V-notchedfree end face terminating at its opposite corners in hooklikeprojections with their inner edges adjacent the side margins thereof, aU-shaped spring clip having a pair of rectangular elongated openingstherethrough in spaced parallelism lengthwise thereof adjacent each ofits free ends for receiving said hook-like projections in snap-onrelation, said spring clip being provided with a pair of spaced parallelcorrugations extending lengthwise thereof throughout its length inalignment with said elongated openings adapted to guide said hook-likeprojections into said elongated openings, and aset-screw adjustablythreaded through the bottom of said spring clip adapted for securing aconduit on the V'-notched end faces of said saddle member whilemaintaining the snap-on connection between said spring clip and saidsaddle member.

2. A stub-up clamp including a screw-bolt and nut adapted to be securedto a slotted channel bar comprising a U-shaped saddle member having aclearance opening centrally through the base thereof for receiving saidscrew-bolt therethrough, a rectangular projection formed on each sidemargin of the base portion of said saddle member normal thereto adaptedto extend through a slot in said channel bar to prevent relativerotation thereof, the legs of said saddle member each having a V-notchedfree end face terminating at its opposite corners in rounded hook-likeprojections extending in the plane thereof with their inner edge facesinclined toward the side margins thereof, a U-shaped spring clip havinga pair of rectangular elongated openings therethrough in spacedparallelism lengthwise thereof adjacent each of its free ends forreceiving said hook-like projections in snap-on relation, said springclip being provided with a pair of spaced parallel corrugationsextending lengthwise thereof throughout its length in alignment withsaid elongated openings adapted to guide said hook-like projections intosaid elongated openings, and a set-screw adjustably threaded through thebottom of said spring clip adapted for securing a conduit on theV-notched end faces of said saddle member while maintaining the snap-onconnection between said spring clip and said saddle member, the inclinededge face of said hook-like projections forming a V-notch with theadjacent side margins of said saddle member for biasing the aperturedends of said spring clip against said side margins while preventinglateral displacement thereof.

References Cited in the file of this patent UNITED STATES PATENTS1,361,262 Jacob Dec. 7, 1920 1,766,254 Kearney June 24, 1930 2 ,550,001Button Apr. 24, 1951 2,912,197 Hudson Nov. 10, 1959 2,937,833 Sachs May24, 1960

